Mice & Trackballs 4330 Wirele Mouse Computer Bluetooth Mouse Silent PC Mause Rechargeable Ergonomic Mouse 2.4Ghz USB Optical Mice For Laptop PC 1.New Upgraded:Unique charging technology,built-in lithium battery2.Silent Design:The left and right click are both silence, no sound when you click3.4keys,more convenient for game operations4.3 kinds DPIadjustableprovides precise positioning 5.Rechargeable:Built-in rechargeable battery, 2-3 months of use after 3-4 hours charging Item Name: Wirele MouseButtons:4 buttonsThe Max DPI: 1600DPIAjustable DPI Switch: 800/ 1200 /1600DPIWiFi Range: 10MBattery: RechargeableCharging Cable Length: About 50 cmSwitch Life:10 Million TimesSize: 112*57*20mmSupport System: The 2.4G usb version support Windows/Mac ,The Bluetooth version support Windows/Mac /ios / android, 1 x Wirele Mouse1 x USB Receiver1 x Charging CableQ&A :Q1:What the different with the 2.4G wirele version and bluetooth 4.0 Version ?A1 :theusb Wirele version work via usb receiver ,can't work via bluetooththe bluetooth version workvia receiver and bluetooth , it is dual mode